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https://issues.apache.org/jira/browse/FLINK-4226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15391200#comment-15391200
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Neelesh Srinivas Salian commented on FLINK-4226:
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Put in a fix. Requesting review.
> Typo: Define Keys using Field Expressions example should use window and not
> reduce
> ----------------------------------------------------------------------------------
>
> Key: FLINK-4226
> URL: https://issues.apache.org/jira/browse/FLINK-4226
> Project: Flink
> Issue Type: Bug
> Components: Documentation
> Affects Versions: 1.0.3
> Reporter: Ahmad Ragab
> Priority: Trivial
> Labels: documentation
>
> ...
> {code:java}
> val words: DataStream[WC] = // [...]
> val wordCounts = words.keyBy("word").window(/*window specification*/)
> // or, as a case class, which is less typing
> case class WC(word: String, count: Int)
> val words: DataStream[WC] = // [...]
> val wordCounts = words.keyBy("word").reduce(/*window specification*/)
> {code}
> Should be:
> val wordCounts = words.keyBy("word").-reduce- window(/*window specification*/)
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